package com.wl.thread.demo06;

/**
 * 死锁：多个线程互相占有对方需要的资源，僵持
 */
public class DeadLock {
    public static void main(String[] args) {
        Makeup g1 = new Makeup(0,"灰姑娘");
        Makeup g2 = new Makeup(1,"白姑娘");

        g1.start();
        g2.start();
    }
}

/**
 * 口红
 */
class Lipstick{

}

/**
 * 镜子
 */
class Mirror{

}

/**
 * 化妆
 */
class Makeup extends Thread{
    //需要的资源只有一份，用static保证只有一份
    static Lipstick lipstick = new Lipstick();
    static Mirror mirror = new Mirror();

    int choice;
    String grilName;

    Makeup(int choice,String grilName){
        this.choice = choice;
        this.grilName = grilName;
    }

    @Override
    public void run() {
        super.run();
        try {
            makeup();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    //化妆，互相持有对方的锁，就是需要拿到对方的资源
    private void makeup() throws InterruptedException {
        if (choice == 0){
            //获得口红的锁
            synchronized (lipstick){
                System.out.println(this.grilName+"获得口红的锁");
                Thread.sleep(1000);
                //一秒钟后获得镜子的锁
                synchronized (mirror){
                    System.out.println(this.grilName+"获得镜子的锁");
                }
            }
            //拿到外边可以解除死锁
            /*synchronized (mirror){
                System.out.println(this.grilName+"获得镜子的锁");
            }*/
        }else {
            //获得镜子的锁
            synchronized (mirror){
                System.out.println(this.grilName+"获得镜子的锁");
                Thread.sleep(2000);
                //一秒钟后获得口红的锁
                synchronized (lipstick){
                    System.out.println(this.grilName+"获得口红的锁");
                }
            }
            //拿到外边可以解除死锁
            /*synchronized (mirror){
                System.out.println(this.grilName+"获得镜子的锁");
            }*/
        }
    }
}
